• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

To investigate how the depth of the water will effect the speed of a wave in it.

Extracts from this document...

Introduction

Gail Wingham

Sc1 – Waves

Investigation:   To investigate how the depth of the water will effect the speed of a wave in it

Back round Knowledge and Theory:

A wave is a continuous movement of individual particles to form a way of transportation for water, light, sound and other such paraphernalia.

A simplified diagram of a general ‘wave’ looks like this

There are 3 main things which will be relevant in my investigation, these are;

  • Wavelength
  • Frequency
  • Wave Speed

The equations below give the formulas to show that all 3 factors are related to each other

Wavelength = Frequency

                       Wave Speed  

Frequency = Wavelength

                     Wave Speed

Wave Speed = Wavelength x Frequency

You can understand why there are in direct proportion if you think of it in an example

Fig.1

Fig.1 shows a wave in sea. In my experiment I am investigating how the depth of the water effects the speed of a wave and this can be seen in fig.1 that the depth of the wave (also known as amplitude) because the deeper the water the longer the particles take to reach the bottom and travel back up to the top again. Frequency is measured in Hz which is another way of saying waves per

...read more.

Middle

The viscosity of the liquid being used is also an important variable because the more viscous the liquid the less quickly and the less easily the particles will be able to move up and down so the speed of the wave will be slower. In my experiment the liquid I am using is water as so it is highly unlikely that range in viscosity of each tray full will be enough to affect the speed of the wave that greatly.

Two more important variables in this experiment are the height at which the tray is dropped and the amount of times you let the waves reflect back and forth. In both cases these variables must stay constant. The wave speed is likely to change according to the drop height of the tray because a tray dropped from a greater height will mean a greater force on the wave which according to the equation:

F = ma  

(Patrick Fullick’s GCSE Physics)

will give the wave a greater acceleration and speed. This variable can be kept the same by always dropping the tray from the same height as shown in fig 1. In

...read more.

Conclusion

Through the equation

And the explanation above I can also conclude that the velocity and depth are in direct proportion to each other

Evaluation:

In my opinion my experiment was successful. It show the relationship between velocity and depth well and also help to prove my predictions but it is also true that my result were not completely exact and these could be due to a couple of things. One of them is that it was very hard to start with the exact same starting force each time because the speed at which I removed the ruler from beneath the tray of water would not have been completely constant. To have improved this is would have helped if I had measure the angle of elevation as well as the height of it because this would have help keep the starting force more accurate. Another thing that could have affected the end results was the accuracy of the timing as it was quite difficult to stop and start the stop clock at the exact times that waves began and hit the side of the tray for the third time. Unfortunately there is no easy solution to this and the only thing that really could be done in order to make the results more accurate would be to record more tests and so the average would be closer to the actually time.

...read more.

This student written piece of work is one of many that can be found in our GCSE Waves section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Waves essays

  1. Marked by a teacher

    Is Sunbathing Good?

    4 star(s)

    Using sun beds before the age of 35 increases your risk of developing skin cancer by up to 75%. UV from sun beds not only harms your skin, if you don't wear goggles it can also damage your eyes. UV eye damage can lead to irritation, conjunctivitis and even eye cancer.

  2. Peer reviewed

    Experiment to investigate the relationship between speed and depth for a water wave.

    4 star(s)

    Method: Firstly, I measured the deepness of the water, which started at 2cm deep and progressed up with 0.5cm intervals until the experiment was 4.5cm deep. To start off the wave the wooden block was raised to 4cm from the bottom of the guttering and left to swing down freely to start the wave.

  1. Investigating the speed of travelling waves in water.

    The gradient of the graph is the 'g' in the formula (acceleration of gravity - 9.8 N/kg). If I find out the gradient, this should be near or equal to 9.8. If the value is close to the true value, this will act as a test and confirmation for accuracy in the experiment.

  2. The aim of my experiment is to see what factors affect electromagnetism the most ...

    Because the line of best fit will be straight I already know without any calculations that there is a direct proportionality between the number of coil wraps and the mass of paperclips attracted to the electromagnet. This bar chart compares the number of coil wraps to the mass of paperclips

  1. Investigation Into How the Depth of Water Affects the Speed of a Wave.

    I will repeat this experiment with depths of 0.2cm, 0.5cm, 1cm, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm and 10cm. 6) I will repeat the complete experiment ten times to verify my results. To make the experiment fair I will only change the depth of water, all other

  2. Investigating into How the Depth of Water has an Affect on the Speed of ...

    The reason that the speed of the wave will reach an optimum is because the water will come to a depth where there is enough water for it not to interact with the bottom of the tray and there will then be no reason for the speed to increase.

  1. Is the speed of sound affected when it travels threw different temperatures of air

    Once you know the wavelength you can calculate the wave velocity. You already know the general equation for velocity of any wave: V = f? To check your answer, calculate the wave velocity with the following equation: V = 331.4 + 0.6T(oc)

  2. SIGNAL ANALYSIS

    The describing equations for resistance, capacitance and inductance are as follows: Resistor = Capacitor = Inductor = Using these equations in a circuit, enable the circuit to be represented as a mathematical model called a system model. This system model will be described as a differential equation.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work